This frenetic music is spreading far beyond its roots in the working-class neighbourhoods of Tanzania's biggest city. Aaron Coultate meets its main characters.
The event promises to be an "intergalactic rave in the beating heart of the Midlands." Batu and Truly Madly are also billed for the first night, taking place at Lab11 on February 15th.
The nation's minister for ethics and integrity had said the event would "compromise national integrity" and "put our citizens at risk of deviant sexual immorality."